Tooth Extraction Tool Using Hot Melt Adhesive Fixation
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Solution Overview
Problem
The existing tooth extraction methods using screw-based tools often require significant twisting force, which can cause unnecessary stress on the tooth, alveolar bone, and adjacent teeth, leading to potential damage and complications such as nerve injury, bleeding, and alveolar bone collapse.
Innovation Solution
A tooth extraction auxiliary tool featuring a first auxiliary substrate inserted into a recessed portion of the tooth, a second auxiliary substrate, and an interval adjustment mechanism, including a male screw portion and a female screw portion, which allows for reduced twisting force by using a hot melt adhesive for fixation and a convex curved surface design to minimize slippage and facilitate easy extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw portion is screwed into the tooth to firmly wedge it, then the tooth can be securely fixed for extraction, but significant twisting force is applied to the tooth causing burden and potential damage
Solution Approach 1:
The patent replaces the traditional mechanical screw-thread engagement system with a chemical bonding system using hot melt adhesive. The adhesive is injected into the recessed portion of the tooth crown and bonds the first auxiliary substrate to the tooth, eliminating the need for twisting forces during fixation. This substitution of mechanical fastening with chemical bonding directly resolves the contradiction by maintaining secure fixation without applying harmful twisting forces to the tooth structure.
Solution Approach 2:
The patent changes the bonding mechanism from mechanical (screw threads) to chemical (hot melt adhesive bonding). By utilizing the thermal and adhesive properties of the hot melt material, the system achieves reliable fixation through chemical bonding rather than mechanical interlocking, thereby eliminating the twisting force requirement while maintaining fixation reliability.
2Productivity
If a lever is used to dislocate the tooth from the alveolar bone, then the tooth can be extracted, but adjacent teeth may be affected or damaged
Solution Approach 1:
The patent extracts the harmful lever mechanism from the tooth extraction process. Instead of using a lever to dislocate the tooth from the alveolar bone (which risks affecting adjacent teeth), the invention uses a screw portion that threads directly into the target tooth's recessed portion. This allows for targeted extraction of only the intended tooth without mechanical contact with or potential damage to adjacent teeth, while maintaining extraction efficiency through the screw's direct engagement with the tooth structure.
Solution Approach 2:
The patent introduces the first auxiliary substrate as an intermediary element between the extraction force and the tooth. This substrate, bonded to the tooth crown via hot melt adhesive, serves as a mediator that concentrates and directs the extraction force precisely on the target tooth, preventing force transmission to adjacent teeth while maintaining effective extraction capability.
3Strength
If the screw portion is firmly wedged into the tooth, then secure fixation is achieved, but the tooth structure may be compromised
Solution Approach 1:
The patent replaces the mechanical screw-thread system with a chemical bonding system using hot melt adhesive. The adhesive creates a strong bond between the first auxiliary substrate and the tooth crown without requiring twisting forces that could damage the tooth structure. This substitution maintains fixation strength through chemical adhesion while eliminating the structural compromise associated with mechanical screw engagement.
Solution Approach 2:
The patent applies preliminary action by pre-forming a recessed portion in the tooth crown before bonding. This recessed portion is designed to receive the first auxiliary substrate and hot melt adhesive, creating an optimized bonding interface that maximizes fixation strength while minimizing intrusion into the tooth structure. The preliminary preparation of the bonding surface ensures strong adhesion without compromising tooth integrity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The tool reduces the burden on the tooth and adjacent teeth during extraction, minimizing the risk of complications like nerve damage and bleeding, while allowing for safer and easier tooth removal with reduced force application.
Implementation Method 1
using a hot melt adhesive for fixation
Implementation Method 2
including a male screw portion and a female screw portion, which allows for reduced twisting force
Data Source
AI summary
Provided are a tooth extraction auxiliary tool and the like which can reduce a burden on a tooth serving as a tooth extraction target, an alveolar bone at this tooth extraction target site, and/or adjacent teeth. A tooth extraction auxiliary tool 1 having a first auxiliary substrate 11 and a second auxiliary substrate 12 is used. The first auxiliary substrate 11 is inserted into a recessed portion X0 formed in a tooth X2, and a hot melt adhesive M is injected. In a state where the tooth extraction auxiliary tool 1 is firmly fixed to the tooth X2 by the solidified hot melt adhesive M, the second auxiliary substrate 12 is gripped by fingertips of an operator, and the tooth X2 is pulled out from a gum X1 while the tooth X2 is twisted.